Slotting machine



Aug. 30,1927.

A; W. PARKES SLOTTIPNG MACHINE 3 Sheets-Sheet 1 Filed Jan. 16, 1924mvmron A TTORNEY Aug. 30,1927. 4 ,64 ,719

v A. W. PARKES- SLOTIING MACHINE 3 Shee'ts-Sheet 2 Filed Jan. 16, 1924INVE/ITUR ATTORNEY Patented Augnj 30 1927.

UNITED STATES ALBERT wi rAnKEs, or DUNDAS, ONTARIO,

POND oomrnnm or new YORK, 1v. Y.,

CANADA, ssreNon TO NILESfBEMENT- A CORPORATION on NEW JnRsnY.

' sLo'rrrne MACHINE.

Application filed January 16,1924. Serial No. 686,559.

This invention relates to slotters and like machines having a worksupport and a re' ciprocat-ing tool slide adapted to operate on workcarried by thework support. The WOIlL support ordinarily comprises amovable saddle carrying a slide thereon in turn'supporting a rotary worktable and means is provided for intermittently feeding these threemembers in timed relationto the tool slide 1 Y reciprocation. Othermeans is provided for continuously traversing the said work supportingmembers. The primary ob ect of the invention is to provide an improvedslotter of this type. Another. object of the invention is to provideinterlocking means between the feeding and traversing means forpreventing the simultaneous operative engagen'ientthereof with theworksupport- I ing members.

The tool slide can be operated from any convenient source of power and,in the drawings, I have illustrated the same as operated 1 by anelectric motor. Another object of the invention is to provide animproved driving connection between this -motor and the tool slide, suchconnection including change speed gearing and a clutch and improvedoperating means therefor including an interlocking mechanism permittinthe shifting of the gears only when the (ilutch is in the disengagedposition.

With the above and other objects inview, my invention consists inthefeatures of construction and operation set forth in the followingspecification and illustrated in the accompanying drawings. Insuchd-rawings anneXedhereto and forming a part of this specification,embodied in a vertical. crank slotter 'but it will be understood thatthe invention can be otherwise embodied and that the drawings are notto'be construed as denfiing or limit.

mg the scope'of the invention, the claims appended to this specification"being relied upon for that purpose.

Referring-to the figures of the drawings: Figure 1 is a front elevationof a vertical crank slotter embodying my invention! Fig; 2 is a.- rearend elevation thereof taken from the right-hand side of Fig. 1.

Fig. 31s a fragmentary rear view showing the work support.

Fig. 4 1s an enlarged fragmentary sectional view of the main drivingmechanism.

12-12 of Fig. 4.

I have shown my invention Fig. is an end elevation thereof;

Fig. 6 is a fragmentarysectional: view taken on'line 6-6 of Fig. 11.

Fig. 7 is a fragmentary plan view of the feeding. and traversingmechanism. Fig. .8. is a horizontal sectional view through Fig. 7. 1 IFig. 9 is a front elevation of Figs. 7 and 8. Fig. is a plan view,partially in section, of; the worksupportand its operating mechag nism.g

Fig. '11 is, an enlarged fragmentary front elevation of the gearshifting mechanism.

Fi .12 is a sectional vieW taken on line In the drawings, 1 indicatesthe bed and 2 the. upright or column of a vertical crank slotter. A toolslide 3 counterbalanced at 4: is guided for vertical reciprocation inthe column. The tool slideis reciprocated by cranlrmechanism 5 operated.from a motor 6 through driving mechanism hereinafter described. A worksupport 7 is mounted. on the bed beneath the tool slide.

A gear 8 on the crank shaft 9 is driven from the. motor pinion 10through the following mechanism: The motor pinion 10 "meshes with a gear11 loose on a bearing 12 for a shaft 13. A clutch 14: splined to theshaft 13 is adapted to engage the gear with the shaft. The portion lt ofthe clutch can be shifted by means of a yoke 15 on a shaft 16. Movementof the clutch and yoke in one direction is adapted to engage the clutchand movement thereof in the opposite direction is adapted to apply afriction brakeat 17..

.Two shafts 1 8 and 19 are mounted in the gear box parallel with theshaft 13. pair of gears 20 and 21 splined to the shaft 13 are adapted tomesh respectively with gears 22 and'23 on the shaft. 18. of gears 29';and 25'splined to the shaft 13 are adapted to be meshed respectivelywith gears 26. and 27 on the shaft 18. A pairof gears 28 and 29 splinedto the shaft 19 are adapted to be meshed respectively with gears 30 andI 19 is in mesh with the gear 8 on the'crank shaft. Eight driving speedscan be obtained by shifting the gearing just described.

:The gears Maud 25 can be shifted by means of a handle 33. on a shaft 34carrying a yoke 35. engaging. the said gears. The gears 28. and 29 canbe. shifted by means of A second pair a handle 36 on a shaft 37 carryinga yoke 88 engaging such gears. The gears and 21 can be shifted by meansof a handle 89 on a shaft 40, a rod ll operatively connecting an arm 1-2on the shaft with a yoke 42 en such gears. A latch 48 is provided oneach handle for holding the gears in their shifted positions. Each ofshafts 34;, 37 and 40 carries a disklike member lt provided with threenotches a, 7) and 0. Three notches of each disk are adapted to beengaged by lateral projections on three arms radiating from a member l6mounted on a shaft 47. isoperativcly connected by means of a rod 49 toan arm 50 on the clutch shif ing shaft 16. A red 51 operatively connectsthe arm d8 to an operating handle 52 on the column adjacent theoperators usual position the machine. The arrangement of the parts issuch that when the clutch is in the driving position (to the left, Fig.a), the projections -15 are engaged in certain of the notches a, Z) and0. Therefore, the gears cannot be shifted until the clutch isdisengaged,

such clutch disengaging action rotating the shaft l7 clockwise (Fig. 11)and withdrawing the projections l5 from the notches.

The work support comprises a saddle 53 slidable longitudinally on ways5% of the bet 1, a slide 55 transversely slidable on ways 56 of thesaddle, and a work table 57 rotat ably mounted on the slide. The saddleand slide are moved respectively by means of screws 58 and 59. The tableis rotated from a shaft 60 havinga worm 61 splined thereto and'meshingwith a wo "n1 wheel 62on the work table. The. screw shaft 59 and shaft60 extend rearwa-rdly parallel with the ways 56 on the saddle into agear box 68 mounted on the saddle. The forward ends of shafts 59 and 60are squared at 59 and 6O respectively whereby the same can be rotated byhand for fine adjustments. Shaft 59 may also be rotated from the squaredends of a shaft 59" connected to shaft 59 through spiral gears 59 Gears6% and 65, driven from a gear 66 on a shaft 67, are loosely mountedrespectively on shafts 59 and 60 within the gear box. Clutches 68 and 69splined to shafts 59 and 60 are adapted to operatively connect eithergear with its shaft. A yoke 7 O engaging the clutches at its ends andpivoted at 71 is adapted to be operated by a clutch rod 72 pivoted toone end of the yoke at 7 3 and extending to the front of the machinewhereby either shaft 59 or 60 may be thrown into operation to move theslide and rotate the table respectively. The shaft 67 carries a bevelgear 7% at its inner end which meshes with a like gear splined to ashaft 76. Shaft 67 and gears 74 and 75 are rotatably supported on thesaddle and move therewith along the shaft 76. This mechanism isdescribed and An arm 4C8 on the shaft 47- claimed in patent to V7. J.Hagman No. 1,528,150 granted March 3, 1925.

The feeding of the work supporting elethrough a lever 79 mounted on oneend of the shaft and engaging the cam. A second lever 80 on the forwardend of shaft 77 is operatively connected by a link 81 to a disc 82.Thedisc 82 is loosely mounted on a shaft 88 directly adjacent a gear 8aalso loose thereon. A double pawl 85 pivoted to the disc isadapted toengage the gear 84: and intermittently drive the same in eitherdirection as will be understood. The pawl can be shifted on its pivot toeither driving position by means of a handle 86. The shaft 83 isoperatively connected to the shaft 7 6 through bevel gears 87 and 88secured to such shafts respectively. A shaft 89 parallel with the shaft83 is operatively connected to the saddle screw .58 by a pair of bevelgears 90. A. gear 91 splined to the shaft 89 is adapted by means of arod 92 and a clutch yoke 92 to be shifted into and out of mesh with agear 93 keyed to the shaft 83. A clutch 9e splined to the shaft 83 isadapted to operatively connect the gear 8% to such shaft. A spring 95normally engages this clutch and the same is adapted to be disengaged inthe manner hereinafter described, by means of arod 96 having a clutchyoke 96 engaging the clutch.

The operation of the feed mechanism is as follows: To feed the saddle53, the gear 91 is placed in mesh with the gear 93, the clutch 9 fbeingnormally engaged with the gear 84 by means of spring 95. If theslide 55 and table 57 are not to be fed, the clutches 68 and 69 areplaced in the neutral position as shown in Fig. 10. The oscillation ofthe disc 82 will thereupon be transmitted to the screw 58 tointermittently feed the saddle. When it is desired to feed the slide 55or to rotate the table 57, the gear 91 is disengaged from the-gear 93.The oscillations of the disc 82 are transmitted through the shaft 76 andthe other mechanism described to the gears G l and 65 on the screw shaft59 and table operating shaft 60. The clutch yoke 70 may be operated fromthe'ro'd 72 to engage either clutch 68 or 69 wit-h its gear and therebydrive either the screw shaft 59 or shaft 60 as desired. The slide isthereby fed along its ways and the table rotated from these shafts aswill be understood.

Means is provided in connection withthe mechanism just described forcontinuously operating the saddle, slide and table shafts toeffecttraversing movement of the saddle, slide and table.

98 on the motor shaft meshes with a gear 99 I have illustrated a motor9! for performing this function. A pinion till alinement with the shaft76. A bevelgear 101 loose on the shaft 100 is in mesh with the bevelgear 87 and a clutch 102 splined to the shaft 100 between bevel gears 88and 101 is adapted to operatively connect the shaft 100 to either ofsuch gears. The clutch 102 is engaged by. a. clutch shifting yoke 103 ona vertical I "an be shifted by meansof a rod 105 engag ing an arm 106 onthe shaft and extending to the front of the machine.

It will be noted that both the feeding and traversing of the'worksupporting members are accomplished through the same driving elements.

vides an interlock preventing the simultaneous engagement of the feedingand traversing means with such elements. The

rear end of the clutch shifting rod 96 is connected to a lever 10?pivoted at 108. The intermediate portion of this lever carries aroller109 engaging the end of an arm 110 secured to the vertical clutchshifting shaft 104. ,When the clutch 102 is in the neutral position, theroller 1'09 engages in notch 111 in the arm 110 and the feed clutch 9ais engaged with the gear 8t. l/Iovement of the rod 105 to engage theclutch 102 with either of bevel gears 88 and 101 cannot take placewithout forcing the roller 109 from the notch 111 and therebydisengaging the eed clutch 9 1. It will therefore'be seen that the feedclutch 94 and the traversing clutch 102 cannot be in driving en a ementsimultaneously. The feed clutch 94: is normally held in engagement bythe spring 95 and the engagement of the traversing clutch 102automatically disengages the feed clutch against the action of thespring.

lVhat I claim is: v I 1. In a slotter, the combination of a base, a worksupport and a tool slide on the base, power operated means forreciprocating the tool slide, mechanism for intermittently feeding thework support synchronously with the said reciprocation, arclutch fordisengaging the feeding means, power operated means including a pair ofbevel gears and a clutch therebetween for continuously traversing thework support in either direction, and interlocking means preventing thesimultaneous engagement of the clutches.

2. In a slotter, the combination of a base,- a work support anda toolslide on the base, power operated means for reciprocating the toolslide, mechanism for intermittently feeding the work supportsynchronously with the said reciprocation, a clutch for disengaging thefeeding means, a spring normally operative to engage the clutch, poweroperated means including a clutch for continuously traversing the worksupport in either direction, means for shifting the last named clutch,and means automatically opershaft 104. The clutch The followingmechanism proative to disengage the feeding clutch when engaging thetraversing clutch.

3. In a slotter,'the combination of a base, a work supportand a toolslide on the base,

power operated means'for reciprocating the tool slide, a shaft in thebase, mechanism including a ratchet gear on the shaft for intermittentlyfeeding the work support synchronously with the said reciprocation, aclutch for disengaging the ratchet gear from the shaft, a'bevel gear onthe shaft, a relatively right angular shaft, a pair of bevel gears loosethereon and in mesh with the said bevel engagement of the clutches.

4:. In a slotter, the combination of a base, a saddle longitudinallyslidable thereon, a slide transversely slidable on the saddle, a

work table rotatable on'the slide, a tool support on the base, poweroperated means for reciprocating the tool support, mechanism forintermittently and selectively feeding the saddle, slide and tablesynchronously with the said reciprocation, power operatedmeans forcontinuously and selectively traversing the saddle, slide and table, andinterlocking means preventing the simultaneous engagement of the feedingand traversing means.

5. In a slotter, the combination of a base, a saddle longitudinallyslidable thereon, a slide transversely slidable on the saddle, a Worktable rotatable on the slide, a tool support on the base, power operatedmeans for reciprocating the tool support, a shaft in the base, mechanismfor intermittently rotating theshaft synchronously with the saidreciprocation for feeding, a shaft parallel with the first named shaftand operatively connected to the saddle to move the same, meansproviding an operative connection between the two shafts, a shaft atright angles tov the first named shaft and operatively connectedthereto, means providing an operative connection between the third namedshaft and the slide and table for moving the same, means forcontinuously rotating the -first named shaft for selectively traversingthe saddle, slide and table, and interlocking means preventing thesimultaneous engage ment of the feeding and traversing means 6. In aslotter, the combination of a base,

a work support and a tool slide on the base, 1

power operated means for reciprocating the tool slide, a feed shaftoperatively connected to the work support, mechanism for inter--mittently rotating the feed shaft to move the work support synchronouslywith the said reciprocation, a bevel gear on the feed shaft, a shaft atright an les to the feed shaft, a pair of bevel gears loose thereon andin mesh with the first named bevel gear, a motor operatively connectedto the second base, a tool slide on the column over tire named shaft, aclutch splined to such shaft between the pair of bevel gears thereon,and means for engaging the clutch with either of said bevel gears,whereby said work support can be continuously traversed in oppositedirections.

7. In a siotter, the combination of a base, a work support thereon, acolumn on the base, a tool slide on the column over the work support, apower element, an operative connection including changespeed gearing anda clutch between the power element and the slide for reciprocating thelatter,

means for shifting the change speed gean ing, moa s for shifting theclutch, and interlocking mechanism between the said means for permittingshitting of the only when the clutch is disengaged.

8. In a slotter, the combination or a base, a work support thereon, acolumn on the the work support, a power element, an opera-- connectionincluding change speed gearing and a clutch between the power elementand the slide for reciprocating the latter, the said change speedgearing includ ing three oai-rs of sliding" gears, three shit ers forrespectively sliding the said three pairs of gears, means for shiftingthe clutch,

and interlocking mechanism between the three shirters and the saldmeansfor per mitting shifting of the gears only when the clutch isdisengaged.

9. In a slotter, the combination of a work support thereon, a column onthe.

base, a tool slide on the column over the work support, a motor mountedon the machine, an operative connection between motor and the slide forreciprocating latter, means for intermittently feeding work support fromthe motor, a motor for continuously traversing the work support, andmeans preventing the simultaneous operation oi both motors on the worksupport.

10. in a slotter, the combination of a base, a work support thereon, acolumn on the base, a toolslide on the columnover the work support,means for intermittently feedthe ing the work support, change speedgearsignature.

"LLBEBT W. PARKES.

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